Method for realizing MBMS TDM and the information transmission method thereof

Abstract

The present invention discloses a method for implementing time division multiplexing among multimedia broadcast multicast services, comprising: if multimedia broadcast multicast services adopt a bearer type of point-to-multipoint, and channel resource is shared by time division multiplexing to transmit the services, a network side informing user equipments of configuration information of the multimedia broadcast multicast services, and sending the multimedia broadcast multicast services on the channel resource satisfying the configuration information, the configuration information comprising information of a time division multiplexing repetition period, and information of a position and amount of channel resource occupied in a time division multiplexing period; after receiving the configuration information, the user equipments receiving the multimedia broadcast multicast services on indicated channel resource.

1. A method for implementing time division multiplexing of multimedia broadcast multicast services from a network side to user equipments, comprising:
 determining, by said network side, if broadcast multicast services adopt a bearer type of point-to-multipoint, and channel resource is shared by time division multiplexing to transmit the services; 
 when the multimedia broadcast multicast services adopt a bearer type of point-to-multipoint, and channel resource is shared by time division multiplexing to transmit the services, said network side informing said user equipments of configuration information of the multimedia broadcast multicast services, and sending said multimedia broadcast multicast services on the channel resource satisfying said configuration information, the configuration information comprising information of a time division multiplexing repetition period, and information of a position and amount of channel resource occupied by multimedia broadcast multicast services transmission in a time division multiplexing period; 
 after receiving said configuration information, said user equipments receiving said multimedia broadcast multicast services on indicated channel resource corresponding to said amount of channel resource. 
 
     
     
       2. A method of  claim 1 , wherein, said information of the position of the channel resource occupied refers to information of an offset of a transmission time interval of the channel resource occupied by said multimedia broadcast multicast services in a time division multiplexing period, and said information of the amount of the channel resource occupied refers to a quantity of system frames or transmission time intervals of the channel resource occupied by said multimedia broadcast multicast services in a repetition period. 
     
     
       3. A method of  claim 2 , wherein, said information of the amount of the channel resource occupied is information of a time division multiplexing repetition length, represented by a quantity of transmission time intervals of continuous channel resource occupation by a multimedia broadcast multicast service starting from a transmission time interval corresponding to an initial offset time representing the position of the channel resource occupied in a time division multiplexing period, or represented by a quantity of system frames of continuous channel resource occupation starting from a system frame corresponding to the initial offset time. 
     
     
       4. A method of  claim 3 , further comprising: when sending said multimedia broadcast multicast services on the channel resource satisfying said configuration information, the network side scheduling the multimedia broadcast multicast services for corresponding system frames according to the following equation, and accordingly, said user equipments also receiving said multimedia broadcast multicast services on the system frames satisfying the following equation:
   (CFN div  N )mod TDM_Rep=TDM_Offset+ i, i= 0 to TDM_Length−1
 
 wherein, 
 CFN is a connection frame number of a system frame; 
 N is a length of a transmission time interval of a transmission channel bearing the multimedia broadcast multicast services, that is, a quantity of system frames included in a transmission time interval; 
 (CFN div N) is an aliquot arithmetic expression, representing rounding down; 
 TDM_Rep is information of a length of said repetition period; 
 TDM_Offset is said initial offset time, that is, the information of the position of the channel resource occupied by said multimedia broadcast multicast services in a repetition period; 
 TDM_Length is information of a quantity of transmission time intervals continuously occupied by said multimedia broadcast multicast services in a repetition period, and also the information of the amount of the channel resource occupied by said multimedia broadcast multicast services. 
 
     
     
       5. A method of  claim 4 , wherein, said configuration information is sent to the user equipments through a Multimedia Broadcast Multicast Service Current Cell point-to-multipoint radio bearer Information message of a Multimedia Broadcast Multicast Service point-to-multipoint control channel, or a Multimedia Broadcast Multicast Service Common point-to-multipoint radio bearer Information message, or a Multimedia Broadcast Multicast Service Single Frequency Network Time Division Multiplexing Information List cell, that is, a MBSFN TDM Info List cell, in a Multimedia Broadcast Multicast Service General Information message. 
     
     
       6. A method of  claim 3 , wherein, said configuration information is sent to the user equipments through a Multimedia Broadcast Multicast Service Current Cell point-to-multipoint radio bearer Information message of a Multimedia Broadcast Multicast Service point-to-multipoint control channel, or a Multimedia Broadcast Multicast Service Common point-to-multipoint radio bearer Information message, or a Multimedia Broadcast Multicast Service Single Frequency Network Time Division Multiplexing Information List cell, that is, a MBSFN TDM Info List cell, in a Multimedia Broadcast Multicast Service General Information message. 
     
     
       7. A method of  claim 2 , wherein, said information of the position and amount of the channel resource occupied is represented by a time division multiplexing offset bitmap, and a bit of said time division multiplexing offset bitmap corresponds to a transmission time interval in a time division multiplexing repetition period, and a value of the bit represents whether said multimedia broadcast multicast services occupy the transmission time interval corresponding to the bit, and positions of bits in said bitmap correspond to initial offset times of corresponding transmission time intervals in the repetition period one to one. 
     
     
       8. A method of  claim 7 , further comprising:
 when sending said multimedia broadcast multicast services on the channel resource satisfying said configuration information, the network side scheduling the multimedia broadcast multicast services for corresponding system frames according to the following equation, and accordingly, said user equipments also receiving said multimedia broadcast multicast services on the system frames satisfying the following equation:
   (CFN div  N )mod TDM_Rep=TDM_Offset, i    
 
 wherein, 
 CFN is a connection frame number of a system frame; 
 N is a length of a transmission time interval of a transmission channel bearing the multimedia broadcast multicast services, that is, a quantity of system frames included in a transmission time interval; 
 (CFN div N) is an aliquot arithmetic expression, representing rounding down; 
 TDM_Rep is information of a length of the repetition period; 
 TDM_Offset,i represents an offset value of an i th  transmission time interval occupied by said multimedia broadcast multicast services in a repetition period, and a value of i is determined by a position of a bit set to a value representing an occupied status in the time division multiplexing offset bitmap. 
 
     
     
       9. A method of  claim 8 , wherein, said configuration information is sent to the user equipments through a Multimedia Broadcast Multicast Service Current Cell point-to-multipoint radio bearer Information message of a Multimedia Broadcast Multicast Service point-to-multipoint control channel, or a Multimedia Broadcast Multicast Service Common point-to-multipoint radio bearer Information message, or a Multimedia Broadcast Multicast Service Single Frequency Network Time Division Multiplexing Information List cell, that is, a MBSFN TDM Info List cell, in a Multimedia Broadcast Multicast Service General Information message. 
     
     
       10. A method of  claim 7 , wherein, said configuration information is sent to the user equipments through a Multimedia Broadcast Multicast Service Current Cell point-to-multipoint radio bearer Information message of a Multimedia Broadcast Multicast Service point-to-multipoint control channel, or a Multimedia Broadcast Multicast Service Common point-to-multipoint radio bearer Information message, or a Multimedia Broadcast Multicast Service Single Frequency Network Time Division Multiplexing Information List cell, that is, a MBSFN TDM Info List cell, in a Multimedia Broadcast Multicast Service General Information message. 
     
     
       11. A method of  claim 2 , wherein, said information of the position and amount of the channel resource occupied is represented by a list of time division multiplexing offsets, and one or more entries of time division multiplexing offsets are included in the list, and said multimedia broadcast multicast services occupy transmission time intervals corresponding to values in all the entries in the list in a time division multiplexing repetition period. 
     
     
       12. A method of  claim 11 , further comprising: when sending said multimedia broadcast multicast services on the channel resource satisfying said configuration information, the network side scheduling the multimedia broadcast multicast services for corresponding system frames according to the following equation, and accordingly, said user equipments also receiving said multimedia broadcast multicast services on the system frames satisfying the following equation:
   (CFN div  N )roodTDM_Rep=TDM_Offset, i    
 wherein, 
 CFN is a connection frame number of a system frame; 
 N is a length of a transmission time interval of a transmission channel bearing the multimedia broadcast multicast services, that is, a quantity of system frames included in a transmission time interval; 
 (CFN div N) is an aliquot arithmetic expression, representing rounding down; 
 TDM_Rep is information of a length of the repetition period; 
 TDM_Offset,i represents a value of an i th  entry in the list of time division multiplexing offsets of said multimedia broadcast multicast services. 
 
     
     
       13. A method of  claim 2 , wherein, by default, said information of the amount of the channel resource occupied indicates that time of channel resource occupation by a multimedia broadcast multicast service in a time division multiplexing period is one transmission time interval. 
     
     
       14. A method of  claim 2 , wherein, said configuration information is sent to the user equipments through a Multimedia Broadcast Multicast Service Current Cell point-to-multipoint radio bearer Information message of a Multimedia Broadcast Multicast Service point-to-multipoint control channel, or a Multimedia Broadcast Multicast Service Common point-to-multipoint radio bearer Information message, or a Multimedia Broadcast Multicast Service Single Frequency Network Time Division Multiplexing Information List cell, that is, a MBSFN TDM Info List cell, in a Multimedia Broadcast Multicast Service General Information message. 
     
     
       15. A method of  claim 1 , wherein, said configuration information is sent to the user equipments through a Multimedia Broadcast Multicast Service Current Cell point-to-multipoint radio bearer Information message of a Multimedia Broadcast Multicast Service point-to-multipoint control channel, or a Multimedia Broadcast Multicast Service Common point-to-multipoint radio bearer Information message, or a Multimedia Broadcast Multicast Service Single Frequency Network Time Division Multiplexing Information List cell, that is, a MBSFN TDM Info List cell, in a Multimedia Broadcast Multicast Service General Information message. 
     
     
       16. A method for transmitting time division multiplexing information in multimedia broadcast multicast services from a network side to user equipments, comprising:
 determining, by the network side, if the network side adopts a bearer type of point-to-multipoint and transmits the multimedia broadcast multicast services by sharing channel resource with time division multiplexing; 
 when said network side adopts a bearer type of point-to-multipoint and transmits the multimedia broadcast multicast services by sharing channel resource with time division multiplexing, the network side sending said user equipments configuration information of said multimedia broadcast multicast services which includes information of a time division multiplexing repetition period, information of a position and an amount of channel resource occupied by multimedia broadcast multicast services transmission in a time division multiplexing period; 
 after receiving said configuration information, said user equipments receiving said multimedia broadcast multicast services on indicated channel resource corresponding to said amount of channel resource. 
 
     
     
       17. A method of  claim 16 , further comprising: a radio network controller of said network side informing the user equipments of the configuration information of said multimedia broadcast multicast services through a channel message of a Multimedia Broadcast Multicast Service point-to-multipoint control channel. 
     
     
       18. A method of  claim 16 , wherein, the information of the amount of the channel resource occupied and the information of the position of the channel resource occupied in said configuration information are represented in one of the following modes:
 said information of the position of the channel resource occupied is represented by an initial offset time, and said information of the amount of the channel resource occupied is represented by a time division multiplexing repetition length, that is, represented by a quantity of transmission time intervals of continuous channel resource occupation by a multimedia broadcast multicast service starting from a transmission time interval corresponding to the initial offset time in a time division multiplexing period, or represented by a quantity of system frames of continuous channel resource occupation starting from a system frame corresponding to the initial offset time; 
 said information of the position and amount of the channel resource occupied is represented by a time division multiplexing offset bitmap, and a bit of said time division multiplexing offset bitmap corresponds to a transmission time interval in a time division multiplexing repetition period, and a value of the bit represents whether said multimedia broadcast multicast service occupies the transmission time interval corresponding to the bit, and positions of bits in said bitmap correspond to initial offset times of corresponding transmission time intervals in the repetition period one to one; 
 said information of the position and amount of the channel resource occupied is represented by a list of time division multiplexing offsets, and one or more entries of time division multiplexing offsets are included in the list, and said multimedia broadcast multicast services occupy transmission time intervals corresponding to values in all the entries in the list in a time division multiplexing repetition period.